The 10 Worst Jobs in America 2011

"To be at the bottom of the list, you really have to have a lot of things working against you," said Tony Lee, the publisher of CareerCast.

CareerCast, which put together the list of the 10 best jobsand this list of the 10 worst jobs, used five main criteria: The work environment, physical demands, outlook, income and stress.

There are two things that a lot of these jobs have in common; they’re dangerous or involve strenuous working conditions and they don’t pay very well, even though the usual rule of thumb is the more dangerous job, the bigger the paycheck.